Ultrasurf is a free software which enables users inside countries with heavy Internet censorship to visit any public web sites in the world safely and freely. Users in countries without internet censorship also use it to protect their internet privacy and security.
With Ultrasurf started, you can use web browsers (like IE, Firefox) the same as before, but all are under Ultrasurf's protection now.
Latest version -- include "Green Tsunami" to remove Green Dam -- collaborate with Global Internet Freedom (GIF).
Note: "Green Dam" is a piece of censorship software that will be mandatorily installed on PCs in China.